The 90th Parallel North is a circle of latitude located 90 degrees north of the equator. It marks the northernmost point on Earth, situated in the Arctic region. This parallel runs through the Arctic Ocean and is primarily covered by sea ice, making it a remote and inhospitable area. At the 90th Parallel North, the sun does not set during the summer months, resulting in continuous daylight, while in winter, it experiences polar night with no sunlight for an extended period. This phenomenon is part of the unique climate and environmental conditions found in the Arctic region.